This article is cited in 2 papers

Plasmonics

Analysis of the influence of nonlocality on the near field characteristics of a layered particle on a substrate

Yu. A. Eremin

Lomonosov Moscow State University

Abstract: The problem of electromagnetic plane wave scattering by a layered nanoparticle with a metal plasmon shell deposited on the surface of a transparent substrate is considered. Using the Discrete Source Method, the influence of spatial nonlocality in a metal layer on the near-field intensity and absorption cross section is investigated. The particle excitation by both a propagating and evanescent wave are considered. It is shown that the substrate has a more significant effect on the optical characteristics of the near field than on the intensity in the far zone. It was found that taking into account the nonlocal effect in the metal leads to a significant decrease in the plasmon resonance amplitude with a small blue shift.

Keywords: The Discrete Source Method, layered nanoparticle, plasmon resonance, spatial dispersion.

Received: 28.04.2020
Revised: 28.04.2020
Accepted: 29.05.2020

DOI: 10.21883/OS.2020.09.49881.141-20

 English version: Optics and Spectroscopy, 2020, 128:9, 1500–1507

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